The title of "greatest boxer of all time" is subjective and a matter of personal opinion, as there have been many legendary boxers throughout history with different styles, accomplishments, and eras. Different fans and experts may have varying opinions on who they consider to be the greatest boxer. That being said, there are a few boxers who are widely regarded as some of the greatest due to their exceptional achievements, skills, and impact on the sport of boxing. Here are a few examples:


Muhammad Ali: Ali, also known as "The Greatest," is often cited as one of the greatest boxers of all time. He had an illustrious career, winning multiple world titles in the heavyweight division and defeating several other legendary boxers. He was known for his lightning-fast footwork, unparalleled charisma, and strong social and political beliefs that made him a cultural icon.


Sugar Ray Robinson: Robinson is often considered one of the greatest boxers in history. He had a remarkable career, winning world titles in multiple weight classes and recording a record of 175 wins, 6 losses, and 2 draws. Robinson was known for his incredible speed, power, and ring intelligence, and his style has been considered a blueprint for many future boxers.


Joe Louis: Louis, known as the "Brown Bomber," is considered one of the greatest heavyweight boxers of all time. He held the world heavyweight title for a record 12 years and defended it 25 times, a record that stood for over 70 years. Louis had devastating punching power, excellent technique, and a remarkable record of wins against top opponents.


Floyd Mayweather Jr.: Mayweather is regarded as one of the greatest defensive boxers of all time. He retired with a perfect record of 50 wins and 0 losses, and he won world titles in multiple weight classes. Mayweather was known for his exceptional defensive skills, speed, and ring IQ, which allowed him to outbox many opponents.


Rocky Marciano: Marciano is the only heavyweight champion in history to retire undefeated, with a perfect record of 49 wins and 0 losses. He was known for his relentless style, punching power, and durability, and his undefeated record is often cited as a testament to his greatness.


It's important to note that boxing is a dynamic sport, and opinions on the greatest boxer of all time may change over time and vary among different individuals. Factors such as era, competition, and personal preferences can influence opinions on the greatest boxer. Ultimately, the title of "greatest boxer of all time" is subjective and open to debate, and different boxing fans and experts may have different opinions on this matter.